Car-truck



UNITED STATES PATENT OFFICE.

GOTLIEB A. AENCHBACHER, OF ATLANTA, GEORGIA.

CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 434,125, dated August 12, 1890.

Application filed December 16, 1889. Serial No. 333,9. (N0 model.)

To all whom it may concern:

Be it known that I, GOTLIEB A. AENOH- BACHER, a citizen of the United States of America, and a resident of Atlanta, in the county of Fulton and State of Georgia, have.

invented certain new and useful Improvements in Car-Trucks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference beinghad to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention relates to supplying a cartruck which shall adapt itself to curves without unnecessary friction, that will be automatic and easy of action, and that will be efficient in all its other functions, as well as in so improving the axle-box as to render it practically dust-proof and prevent as far as practicable the dripping therefrom of the lubricant, the details of all of which will be hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a vertical section through the center of the truck, showing, however, the grease-box only partly in section and the bridges on which said box rests entire in their operative parts. Fig. 2 is a longitudinal central section of the axle-box, showing the butting-piece entire, also the journal-bearing of the axle, and also showing the grease-box cover attached, which was removed in the former-described figure. Fig. 3 is a view in elevation of the packingslides, which form a bar to the entrance of the dust around the axle at its entrance to the axle-box, said device being also shown sectionally in position in Fig. 2. Fig. 4 is a horizontal cross-section of the butting-piece, showing its contour in cross-section.

In' the figures like reference-marks indicate corresponding parts in the several views.

- A is the axle, which may be of any form of construction, having, however, its ends rounded, preferably, for contact with the abutting piece 13, which slides, to insert and remove it, in grooves in the sides of the casing of the axle or grease box. This abutting-piece is for the purpose of making the point of contact between the end of the axle and suitable devices for preventing end-motion as small as possible, the construction shown being the.

practice it would amount to a pivot-bearing in its functions without the disadvantages of such construction.

0 is the journal-brass, which has a hemispherical bearing against the top of the easing D of the axle-box, which has a hemispherical indentation, or one of sufficient depth to provide a suitable bearing for a projection c on the brass O. The construction shown consists of a projection depending from the inner side of the upper part of the casing D and having in its end the said indentation, said projection being lettered d. The journalbrass is left perfectly loose within the casing D, in order that it may have play on its contacting point in all directions to adapt itself to all the motions of the car or unevenness of the tracks, which causes the wear to be uniform all over the surface contacting with the journal-bearing of the axle and necessarily lengthens the life of the brass, which is an advantage of great importance, brasses of this construction inactual service having been shown to run from twice to three times as long as those of other constructions, the most approved kind in use at the present time. The cover (1 of the greasebox D is hung on a lip d", projecting up wardly from the top of the casing D, and extends downwardly, having on its bottom a flange c which corresponds with the flange 61" on the casing, and to secure the said cover in place a bolt d is passed through the holes through both of said flanges d' and c If desired, the joints around the edges of this cover at may be packed with a washer of leather to exclude dust, &c. In

the inner end of the casing D is a hole for the introduction of the axle, and into which, were it not stopped, would enter dust and other foreign substance injurious to the life of the journal and the brass hearing. The

annular opening left after the introduction of the axle is stopped by the slide E, fitting into the recess e in the casing D, the upper half 6 fitting therein, and being held down on the journal by its gravity, while the lower piecee" is held pressed against the journal by the spring e, which may be in the form shown or in the form of a coil-spring properly recessed into the casing to protect it'from dust. These parts 6 and c" are preferably made of fiber, but, obviously, other substances may be used.

This casing D and its contents, as above described, are slung in a housing constructed substantially as follows: Two bridges .F and G, having straight portions, along which the casing D may slide laterally, end motion of said casing being prevented by the flanges f on said casing, are provided, being secured together and held apart by the pieces K substantially as shown. This housing is so set in the pedestal P as to have motion vertically therein, and having practically no motion in any other direction relative to the pedestal. The vertical motion is limited and made elastic by springs L of suitable stiffness and in the number desired, preferably encircling guide-pins M. In case these springs, by reason of great superincumbent Weight, prove insufficient for sudden jars, such as would be caused by the side-lash of the car in going around a sharp curve, buffers of rubber or other suitable material may also be interposed between the bridge F and a suitable upper bearing. The lateral motion of the casing D, and consequently the journal-bearing of the axle, is governed by springs N, bearing against the said casing at one end and the piece K at the other end, lugs n being supplied, if desired, for holding said springs in their position. In the construction shown-that is, having these lugs n-said lugs are also made to answer the purpose of sockets for holding the buffers O of rubber or other material, said buffers being for the purpose of softening the contact of the said casing on a motion-limiting stop, the buflfers themselves in the present instance being said stops.

projections c seated on said bearing-points d,

the axle A, the abutting-ring B, the bridge, consisting of the longitudinal supports F and. G, connected at their ends by the transverse supports K, carried on said casing F and movable longitudinally on the same, the buffers O, and springs N, carried on the lugs '11 between the ends of the bridge and the casing D for confining the movement of the bridge on said casing, as and for the purpose set forth.

2. In a device of the described class, consisting of the casing D, carried 011 the axle A and having bearing-points d, the j ournal-bearing brass 0, having projections c seated on said bearing-points d, the abutting-ring B, carried in grooves in the sides of the casing, the slides e and e, sliding in suitable recesses in the casing, the spring 6 for retaining the lower of said slides in place, the, bridge, consisting of the longitudinal supports F and G, connected at their ends by the vertical transverse pieees K, carried on said casing and having longitudinal play on the same, the springs N and buffers 0, carried on the lugs n between the casing and the bridge for confining the play of the same on the casing, the pins IWI, and the springs L, surrounding said pins, substantially as and for the purpose set forth.

In testimony whereof I hereunto afiix my signature in presence of two witnesses.

eoTLiEn A. AENCHBACHER.

NVitnesses:

A. P. Woon, S. M. WOOD. 

